hi Gerolf
have you shotted 700-800 ships for 8 days in Istanbul ?
This is former cargo boat.this design come from very old times.They named as "Taka" in Turkish..Possible this is a very old boat too..they looks like walnut shell.when i am a child i saw many of them.. some of them small some of them hundred dwtons..but they finished now..some of them converted to floating tour boats,restaurant etc.Sesta one of them..